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Which physiologic mechanism best describes the function of the sodium-potassium pump?
A. active transport
B. diffusion
C. filtration
D. osmosis
Correct Answer: A
Explanation/Reference:
Explanation:
Active transport is a process requiring energy to transport ions against a concentration gradient, as is needed in the sodium-potassium pump. Choices 2, 3, and 4 are other regulatory mechanisms involved in fluid and electrolyte balance.Physiological Adaptation
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